Absorption of carbon dioxide into aqueous sodium hydroxide and sodium carbonate-bicarbonate solutions

Abstract

The rates of absorption of pure carbon dioxide into aqueous sodium hydroxide and sodium carbonate-bicarbonate solutions have been measured using a liquid-jet column, a wetted-wall column and a quiescent-liquid absorber. The experimental results are analysed on the basis of the penetration theory for gas absorption accompanied by a two-step chemical reaction, which was presented by the authors in a previous paper. The data are in good agreement with the theoretical predictions.